Apple announced the winner today of its “25 Billion App Countdown” promotion. The winner is Chunli Fu from China, and Disney’s “Where’s My Water? Free” was the 25 billionth app to be downloaded in the App Store. Fu will receive an iTunes Gift Card worth $10,000.

We’d like to thank our customers and developers for helping us achieve this historic milestone of 25 billion apps downloaded,” said Eddy Cue, Apple’s senior vice president of Internet Software and Services. “When we launched the App Store less than four years ago, we never imagined that mobile apps would become the phenomenon they have, or that developers would create such an incredible selection of apps for iOS users.